# Tomstrails GPS UTM — UTM Grid Reference

> Accurate UTM grid reference and GPS location on topographic maps. (iPhone/iPad app by Tomstrails.com.)

- Source: https://appshunter.io/ios/app/tomstrails-gps-utm/id1004370364 (this page in markdown: same URL + `.md`)
- Developer: [Tomstrails.com](https://appshunter.io/developer/425642318)
- Category: Navigation, Health & Fitness
- Price: Free with in-app purchases
- Rating: 4.80/5 from 1,599 App Store ratings · 154 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.1 · 4 MB
- Languages: American English, French (France), German (Germany), Italian, Russian, Chinese (Simplified, China), European Spanish, Turkish
- Released: 2015-07-06
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/tomstrails-gps-utm/id1004370364/reviews.md

## What is Tomstrails GPS UTM?

GPS UTM displays a fast and accurate UTM grid reference. Locate your position on topographic maps. GPS UTM supports many of the regional datums used around the world including ED50.

∙ No phone signal required - works in the most remote locations.
∙ 1 metre, 10 metre and 100 metre formats.
∙ Paste your coordinate into other apps or share with other people.
∙ A large, clear, high contrast display ensures you can easily read your position in any light conditions.
∙ Optimal battery use based on speed of travel and current charge level ensures all day use.
∙ No Adverts.

GPS UTM - know where you are.

## Key features

- Fast and accurate UTM grid reference
- Locate position on topographic maps
- Works without phone signal
- Supports regional datums (e.g., ED50)
- Multiple coordinate formats (1m, 10m, 100m)
- Share coordinates with other apps
- High contrast display for readability

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Feature Pack | Free | one-time |


## What do users think of Tomstrails GPS UTM?

Overall sentiment: positive

**Pros**

- 🚀 Simple and free
- 👍 Works well
- 👍 Easy to use
- 👍 Accurate and reliable
- 👍 Great for hiking and emergencies

**Cons**

- 🐛 Doesn't do anything
- 🐛 Coordinates not always accurate
- 💰 Requires payment for some features

**Commonly reported bugs**

- Stopped working after iOS update
- UTM grids were off initially, required setting changes

**Most requested features**

- Add support for Morocco coordinate system
- Add option to average readings and hold the result
- Add option to reduce coordinate display to 6 digits for emergency use
- Bring back previous features like degrees/minutes display and ability to edit messages

## Recent user reviews (10 of 154)

All indexed reviews: https://appshunter.io/ios/app/tomstrails-gps-utm/id1004370364/reviews.md

### 5/5 — Super appli

*2025-07-05, version 2.0.1*

Pensez vous la sortir sur androïde ? Merci

### 5/5 — Gayet iyi

*2025-05-20, version 2.0.1*

Memnunum

### 5/5 — Başarılı

*2025-01-06, version 2.0.1*

Oldukça doğru ölçüm 👏👏👏

### 2/5 — I'm and you a  so

*2024-11-19*

Z xx zzz zzz and a Aaaa w  a Pop asa wasdo afor Q  t

### 3/5 — please could you added merchich nord morocco

*2024-10-27*

many thanks

### 5/5 — Excelente

*2024-10-10, version 2.0.1*

He usado esta aplicación durante muchas salidas a terreno, y no falla, tiene una buena precisión cuando se trata de ubicar puntos sin señal 10/10

### 3/5 — Utile solo per vedere la posizione in WGS 84

*2024-09-26, version 2.0.1*

Ci sono tanti altri sistemi di coordinate, ma selezionando ED50 ad esempio non cambia nulla. Nella schermata principale viene mostrata solo la coordinata WGS84

### 5/5 — Ing geologo

*2024-09-23, version 2.0.1*

Buscar estructuras

### 5/5 — Muy buena aplicación

*2024-09-19, version 2.0.1*

Funciona satelital mente 👍

### 5/5 — Coordonnées gps

*2024-08-23, version 2.0.1*

Je ne connaissais jamais ma position gps, et grâce à cette application , j ai ma localisation immédiatement
Génial

## Frequently asked questions about Tomstrails GPS UTM

### What does Tomstrails GPS UTM do?

Tomstrails GPS UTM provides fast and accurate UTM grid references and displays your current location on topographic maps. It is designed to work even in areas with no phone signal, making it ideal for remote use.

### What are the key features of this app?

Key features include offline functionality, support for various regional datums like ED50, multiple coordinate formats (1m, 10m, 100m), the ability to paste or share coordinates, a high-contrast display for readability, and optimized battery usage.

### Is Tomstrails GPS UTM free to use?

The app is free to download and use, with additional features or content potentially available through in-app purchases. It does not display any advertisements.

### Does the app require a phone signal to work?

No, a significant advantage of this app is that it does not require a phone signal to function. It works in the most remote locations by utilizing GPS.

### Who would benefit from using this app?

This app is beneficial for hikers, campers, surveyors, geocachers, and anyone who needs to know their precise location, especially in areas without cellular service. Its offline capabilities and accurate grid references are valuable for outdoor activities and professional use.

## Version history (last 5 releases)

### 2.0.1 — 2021-09-26

Restored Australian AGD66 and AGD84 datums.

### 2.0.0 — 2021-09-23

Updated appearance.

### 1.51 — 2021-01-05

Correction in Russian translation.

### 1.50 — 2020-12-03

Added iOS 14 precise location support.
Optimised for new device sizes.

### 1.42 — 2020-02-02

Additional datums supported.

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## More apps by Tomstrails.com

- [Tomstrails GPS Duo](https://appshunter.io/ios/app/tomstrails-gps-duo/id425642315)
- [GPS OS Grid Reference](https://appshunter.io/ios/app/gps-os-grid-reference/id993436655)
- [Cotswold Walks](https://appshunter.io/ios/app/cotswold-walks/id1279020717)
- [Cornwall Walks](https://appshunter.io/ios/app/cornwall-walks/id1411191127)
- [Lake District Walks](https://appshunter.io/ios/app/lake-district-walks/id1463266357)

All apps by Tomstrails.com: https://appshunter.io/developer/425642318

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*